摘要
根据我国长输管道建设的发展历程 ,总结了全纤维素型、混合型、复合型三种手工下向焊技术及活性气体保护、药芯焊丝自保护两种半自动下向焊技术和全自动活性气体保护焊与全自动药芯焊丝下向焊技术的工艺特点及在我国长输管道建设中的应用状况 。
According to the development of pipeline construction in China,the paper introduces technology feature of manual vertical down welding (cellulose type?mixed type?compound type),semi-automatic vertical down welding(MAG?self-shielded flux-cored wire),automatic vertical down welding(MAG?self-shielded flux-cored wire).It is pointed out that the developing tendency of vertical down welding for pipeline in china is automatic vertical down welding.
出处
《焊接》
2001年第11期5-8,共4页
Welding & Joining
关键词
长输管道
下向焊
油气管
焊接
pipeline, vertical down welding, present situation, development
